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Re: DNS Packets
From: Mikey van der Worp <mvdworp () utelisys com>
Date: Mon, 3 Jun 2013 15:53:03 +0200


Thanks for the reply.

Does anybody  have any other solutions?
Because when i need to do this.. I need to setup an entire new environment with Virtual Servers etc etc.


Van: Joel Esler [mailto:jesler () sourcefire com]
Verzonden: maandag 3 juni 2013 15:46
Aan: Mikey van der Worp
CC: snort-users () lists sourceforge net
Onderwerp: Re: [Snort-users] DNS Packets

On Jun 3, 2013, at 8:57 AM, Mikey van der Worp <mvdworp () utelisys com<mailto:mvdworp () utelisys com>> wrote:

Hi there

I've got several rules.. But non of them are working properly..

"How to detect a DNS Query Reply -> OK"..
This is something i've created a couple of days ago... Doesn't work as it should be.. This detects "all querys".. Even 
when its refused...

I would take the packet capture you have and throw it into wireshark and learn which bytes in the packet you have 
indicate a "Query Reply -> OK" response, and write a rule to detect that sequence of bytes.

Joel Esler
Senior Research Engineer, VRT
OpenSource Community Manager
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